//
//  DeleteNull.m
//  TryShopping
//
//  Created by panquanReabam.com on 16/11/1.
//  Copyright © 2016年 RuiBen. All rights reserved.
//

#import "DeleteNull.h"

@implementation DeleteNull
//
//@end
//#import "NSDictionary+DeleteNull.h"

//@implementation NSDictionary (DeleteNull)

#pragma mark - 私有方法
//将NSDictionary中的Null类型的项目转化成@""
+(NSDictionary *)nullDic:(NSDictionary *)myDic
{
    NSArray *keyArr = [myDic allKeys];
    NSMutableDictionary *resDic = [[NSMutableDictionary alloc]init];
    for (int i = 0; i < keyArr.count; i ++)
    {
        id obj = [myDic objectForKey:keyArr[i]];
        
        
        if([obj isKindOfClass:[NSNull class]]){
            [resDic removeObjectForKey:keyArr[i]];
        }else{
            obj = [self changeType:obj];
            [resDic setObject:obj forKey:keyArr[i]];
        }
        

//            obj = [self changeType:obj];
//        if ([[NSString stringWithFormat:@"%@",obj]isEqualToString:@""]) {
//             [resDic removeObjectForKey:keyArr[i]];
//        }else{
//         [resDic setObject:obj forKey:keyArr[i]];
//        }
//
       
       
    }
    return resDic;
}

//将NSDictionary中的Null类型的项目转化成@""
+(NSArray *)nullArr:(NSArray *)myArr
{
    NSMutableArray *resArr = [[NSMutableArray alloc] init];
    for (int i = 0; i < myArr.count; i ++)
    {
        id obj = myArr[i];
        
        obj = [self changeType:obj];
        
        [resArr addObject:obj];
    }
    return resArr;
}

//将NSString类型的原路返回
+(NSString *)stringToString:(NSString *)string
{
    return string;
}

//将Null类型的项目转化成@""
+(NSString *)nullToString
{
    return @"";
}

#pragma mark - 公有方法
//类型识别:将所有的NSNull类型转化成@""
+(id)changeType:(id)myObj
{
    if ([myObj isKindOfClass:[NSDictionary class]])
    {
        return [self nullDic:myObj];
    }
    else if([myObj isKindOfClass:[NSArray class]])
    {
        return [self nullArr:myObj];
    }
    else if([myObj isKindOfClass:[NSString class]])
    {
        return [self stringToString:myObj];
    }
    else if([myObj isKindOfClass:[NSNull class]])
    {
        return [self nullToString];
    }
    else
    {
        return myObj;
    }
}

@end